---
product_id: 437131563
title: "HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV"
brand: "cmstedcd"
price: "8703 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Cmstedcd"
url: https://www.desertcart.kg/products/437131563-hdmi-audio-extractor-4k-x-2k-30hz-hdmi-to-optical
store_origin: KG
region: Kyrgyzstan
---

# 4K@30Hz UHD passthrough 5.1CH Dolby & DTS surround HDMI to Optical + 3.5mm outputs HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV

**Brand:** cmstedcd
**Price:** 8703 som
**Availability:** ✅ In Stock

## Summary

> 🎬 Elevate your AV setup with flawless 4K video and surround sound extraction!

## Quick Answers

- **What is this?** HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV by cmstedcd
- **How much does it cost?** 8703 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/437131563-hdmi-audio-extractor-4k-x-2k-30hz-hdmi-to-optical)

## Best For

- cmstedcd enthusiasts

## Why This Product

- Trusted cmstedcd brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Metal Build:** Compact, durable design ensures stable signal transmission and long-lasting performance.
- • **Crystal-Clear 4K Video:** Supports UHD 4K x 2K @ 30Hz with zero lag for stunning visuals.
- • **Plug & Play Simplicity:** No drivers needed—just connect and elevate your home entertainment instantly.
- • **Versatile Audio Outputs:** Simultaneous Optical SPDIF and 3.5mm stereo outputs for ultimate compatibility.
- • **Immersive 5.1 Surround Sound:** Extracts true DTS-HD and Dolby Digital audio for theater-grade sound.

## Overview

This HDMI Audio Extractor delivers seamless 4K@30Hz video passthrough while extracting high-fidelity 5.1 channel audio via Optical SPDIF and 3.5mm outputs. Compatible with PS4/5, Blu-ray, Fire TV, and more, it supports DTS-HD, Dolby AC3, and 3D video formats. Its plug-and-play metal design ensures stable, lag-free AV synchronization, making it an essential upgrade for any modern home theater or gaming setup.

## Description

HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV : desertcart.co.uk: Electronics & Photo

Review: Great Value for HDMI Audio Extraction - ecently bought this HDMI Audio Extractor for my home theater setup, and it’s been a solid addition to my media system. I needed a device to separate audio from my HDMI signal so I could send it to my soundbar via optical or 3.5mm audio without sacrificing video quality. This device does the job really well. It's a lot smaller than I thought and seems very well made. I love the flexibility of having multiple audio output options. The optical output works seamlessly with my soundbar, and I can use the 3.5mm jack for more traditional speaker setups. I also like that it supports both digital (Dolby, DTS-HD, etc.) and analog audio, which gives me more versatility. Setup is extremely straightforward. No need for complicated drivers or software just plug it in. Considering the functionality, the price is a great value. It's not the most expensive option on the market, but it delivers the essentials with decent performance. I have other items made by the same company and never had any issues and also found there customer service A+. Highly recommend this item.
Review: Works perfectly for true 5.1 surround sound!! - I bought this HDMI audio extractor to use with my Xbox and Fire Stick and I am impressed. At first I only got stereo but once I connected the optical Toslink output to my surround sound system and changed the audio settings on my devices to Dolby Digital it worked exactly as advertised with full 5.1 surround sound. The HDMI passthrough keeps the video sharp with 4K supported without issue and the optical audio output passes Dolby Digital and DTS properly. The red and white RCA and the 3.5mm outputs are stereo only so if you want true surround you need to use the optical output into a receiver or surround system that can decode it. For the price this little box is excellent. Easy to set up, solid build and does the job. If you want a simple way to split HDMI while still getting proper surround sound I highly recommend it.

## Features

- 【Pre-purchase reading】When using 5.1CH digital audio, you need to set the audio format of the signal source to PCM. If you mistakenly set it to ‘linear PCM’, the surround sound signal may be converted to stereo output. This product does not support ARC or eARC functionality. If your audio source includes these features, you can use an ARC/eARC converter to convert the signal to an optical/3.5mm port, then connect it to your speakers or headphones.
- 【HDMI Audio Extractor Splitter】One HDMI input port, one HDMI output port, Optical Toslink SPDIF and 3.5mm stereo audio output, achieve the synchronization of audio signal separation,guarantees audio and video transmission with high-fidelity and lossless. Note: Televisions are not supported as input devices. Supported input sources include TV boxes, PS4/5 consoles, computers, Blu-ray players, and DVD players.
- 【3 Audio EDID Settings】HDMI optical audio splitter with Pass, 2CH, 5.1CH three audio mode options. 3.5mm Analog R/L output supports 2CH PCM stereo audio; SPDIF output supports 2CH PCM,5.1CH Digital, DTS Audio. Sound and picture signals are transmitted without delay. (Note: The audio splitter does not support 7.1 channels.)
- 【4K@30Hz Resolution】HDMI optical splitter supports resolutions up to 4k2k@30Hz/3D /1080p/1080i/720p/576p/576i/480p/480i. 3D and 24bit/deep color 30bit,36bit deep colour, synchronized sound.This audio extractor only supports 4K 30hz, HDMI version 1.4.
- 【HDMI Optisch Adapter Wide Compatibility】This HDMI to HDMI Audio Extractor is suitable for Blu-ray/DVD/HD Players, Cable/Satellite Boxes, Fire TV, HDTV, Chromecast, PS4 Slim, PS3, PS3, PS4, PS5, Xbox, PC/Laptop, HD Camcorders, HD DVR, etc.
- 【Plug and Play】The optical audio adapter no need to Install Drivers and Software,plug and play,Metal box construction, solid build. more stable signal transmission, compact and exquisite, convenient storage.(Note:The HDMI Audio Splitter is low power and only requires a USB port connected to another device's 5V USB port to function.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NYJL6XF |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 2,047 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 3 in Digital-Analog Converters |
| Colour | 4K30Hz 5.1CH |
| Customer Reviews | 4.1 4.1 out of 5 stars (306) |
| Date First Available | 21 Dec. 2021 |
| Finish | Metal |
| Included components | 1.HDMI Audio Extractor 2.HDMI cable 3.Power cable 4.RCA Audio cable5.User manual |
| Item Weight | 150 g |
| Item model number | 20211221 |
| Manufacturer | CMSTEDCD |
| Material | Metal |
| Package Dimensions | 19.5 x 13.6 x 3.4 cm; 150 g |
| Part number | 20211221 |
| Plug profile | Cable Mount |

## Product Details

- **Brand:** CMSTEDCD
- **Maximum supply voltage:** 5.1 Volts
- **Minimum supply voltage:** 5 Volts
- **Mounting type:** Cable Mount
- **Number of pins:** 42

## Images

![HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV - Image 1](https://m.media-amazon.com/images/I/611GoQtNy+L.jpg)

## Questions & Answers

**Q: can i use this with a amazon fire stick on a dell monitor with no speakers**
A: Hi friend you can use the HDMI audio extractor. When you use the headset, you can toggle the switch to set it to 2.0. Set fire TV sound output to stereo
The following are the steps：
1-Start from Settings and select 'Display & Sounds' 2-Move down and select the 'Audio' option 3-Move down and select 'Surround Sound' 4-Move down and select either 'Stereo'.

**Q: can i plug this into an earc output tv?**
A: Hello, sorry, the HDMI audio splitter does not support eARC function.
Correct connection method: TV BOX→HDMI audio extractor→TV+optical or AUX

**Q: Is this meant to support fire tv stick 4k max? it works with older fire tv sticks but with the 4k max i can’t get any sound to my hi-fi stereo speaker**
A: My fire stick connects directly to my Bluetooth speaker via Bluetooth

**Q: Does it support disabling audio output over hdmi?**
A: Dear,the HDMI Audio Extractor support aux and HDMI audio output at the same time

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Value for HDMI Audio Extraction
*by L***S on 21 September 2025*

ecently bought this HDMI Audio Extractor for my home theater setup, and it’s been a solid addition to my media system. I needed a device to separate audio from my HDMI signal so I could send it to my soundbar via optical or 3.5mm audio without sacrificing video quality. This device does the job really well. It's a lot smaller than I thought and seems very well made. I love the flexibility of having multiple audio output options. The optical output works seamlessly with my soundbar, and I can use the 3.5mm jack for more traditional speaker setups. I also like that it supports both digital (Dolby, DTS-HD, etc.) and analog audio, which gives me more versatility. Setup is extremely straightforward. No need for complicated drivers or software just plug it in. Considering the functionality, the price is a great value. It's not the most expensive option on the market, but it delivers the essentials with decent performance. I have other items made by the same company and never had any issues and also found there customer service A+. Highly recommend this item.

### ⭐⭐⭐⭐⭐ Works perfectly for true 5.1 surround sound!!
*by L***L on 12 October 2025*

I bought this HDMI audio extractor to use with my Xbox and Fire Stick and I am impressed. At first I only got stereo but once I connected the optical Toslink output to my surround sound system and changed the audio settings on my devices to Dolby Digital it worked exactly as advertised with full 5.1 surround sound. The HDMI passthrough keeps the video sharp with 4K supported without issue and the optical audio output passes Dolby Digital and DTS properly. The red and white RCA and the 3.5mm outputs are stereo only so if you want true surround you need to use the optical output into a receiver or surround system that can decode it. For the price this little box is excellent. Easy to set up, solid build and does the job. If you want a simple way to split HDMI while still getting proper surround sound I highly recommend it.

### ⭐⭐⭐⭐ It works .
*by C***Y on 11 August 2025*

Does the job intended .

## Frequently Bought Together

- HDMI Audio Extractor 4K x 2K@30Hz HDMI to Optical Audio Adapter HDMIto Spdif Toslink and 3.5mm L/R Stereo Audio Converter Support DTS-HD/3D /Blue-Ray/Dolby-AC3/PS3/PS4/HDTV
- WARRKY Optical Cable for Soundbar to TV, Optical Cable, 1.8M / 6FT [Alloy Case, Nylon Braided, 24K Gold-Plated] Digital Optical Audio Cable Toslink, Compatible with Samsung, LG, Sony, Xbox etc.

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-17*